View source for ER-ADSR-555-01 Rev 3 Assembly Sheet

[[FILE:ER-ADSR-555-01_FRONT_REAR_-Rev3_CAD.PNG]]

== Parts List ==

* Note R4 silkscreen is wrong, s/b 1M

{| class="wikitable"
! Find
! Qty
! Ref Des
! Part Number
! 
! Find
! Qty
! Ref Des
! Part Number
|-
| 1
| 3
| R1, R6, R12, R13*
| 10K (NOTE)
| 
| 11
| 3
| Q1-Q3
| [https://www.onsemi.com/pub/Collateral/2N3903-D.PDF 2N3904]
|-
| 2
| 1
| R2
| 22K
| 
| 11
| 1
| DS1
| LED, 5MM
|-
| 3
| 4
| R3, R5, R7, R10
| 4.7K
| 
| 12
| 3
| RV1, RV2, RV4
| A1M
|-
| 4
| 1
| R4
| 1M
| 
| 13
| 1
| RV3
| B10K
|-
| 5
| 3
| R8, R9, R11
| 100
| 
| 14
| 1
| U1
| [https://store.synthrotek.com/TL072P-Op-Amp_p_418.html TL072]
|-
| 6
| 5
| D1-D5
| 1N4148
| 
| 15
| 1
| U2
| LM555N
|-
| 7
| 1
| C1
| 10nF
| 
| 16
| 1
| J1
| [https://store.synthrotek.com/10-Pin_Keyed_Shrouded_Eurorack_Power_Header Conn_02x05]
|-
| 8
| 1
| C2
| 10uF
| 
| 17
| 2
| J2, J3
| [https://www.taydaelectronics.com/pj-301bm-3-5-mm-mono-phone-jack.html PJ-301BM]
|-
| 9
| 1
| C3
| 1uF
| 
| 
| 
| 
| 
|-
| 10
| 3
| C4-C6
| 0.1uF
| 
| 
| 
| 
| 
|-
|}

== Notes ==

=== Master Timing Cap ===

* Installed C2 (10uF) in machined contact pins

[[file:ER-ADSR-555-01_P1090087-720px.jpg]]

=== R13 - Decay Noise Fix ===

* [[ER-ADSR-555-01#Decay_Fix|Decay noise fix details]] - from Rev 2 card
* Added as R13 on Rev 3 card
** 10K on board silkscreen
** Used 3.3K Resistor on Rev 1, Rev 2 cards